Possible Clues:

• Food that's a month spelled backward
• Candied Thanksgiving vegetable
• Tuber that might be candied
• Edible tuber featuring in many a meal
• Root for a fall
• Chinese ___, food also called nagaimo
• Root vegetable needs month to come up
• Crop item grown in Chinua Achebe's 'Things Fall Apart'
• Tuber that's a month spelled backward
• Purple __